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Photoreceptor degeneration is the most critical cause of visual impairment in age-related macular degeneration (AMD). In neovascular form of AMD, severe photoreceptor loss develops with subretinal hemorrhage due to choroidal neovascularization (CNV), growth of abnormal blood vessels from choroidal circulation. However, the detailed mechanisms of this(More)
PURPOSE To determine changes in choroidal structure by binarization of optical coherence tomographic (OCT) images. METHODS Choroidal images were recorded by enhanced depth imaging OCT. The subfoveal choroidal images were analyzed, and the luminal and interstitial areas were converted to binary images by the Niblack method. The interrater, intrarater, and(More)
PURPOSE To evaluate the 1-year results of using triamcinolone acetonide (TA) in pars plana vitrectomy (PPV). DESIGN Multicenter prospective controlled clinical trial. METHODS SETTING AND STUDY POPULATION the study population comprised 774 eyes from patients treated at eight Japanese hospitals, among which 391 eyes underwent TA-assisted PPV and 383(More)
PURPOSE We determined the relationship between the position of the peak of the retinal nerve fiber layer (RNFL) thickness, and the retinal arteries, axial length (AL), and sectoral RNFL thickness in healthy eyes. METHODS A prospective, observational cross-sectional study (registration number, UMIN000006040) of 50 healthy right eyes (mean age 25.8 ± 3.7(More)
PURPOSE To compare subfoveal choroidal thickness (SCT) measurements of three different commercially available spectral-domain optical coherence tomography instruments with healthy eyes of Japanese. METHODS A prospective, cross-sectional study was performed at a single institution. SCT of the right eye of 43 normal subjects was measured using three(More)
PURPOSE The cornea is an ideal organ for evaluating gene transfer because it can be treated noninvasively and monitored easily. The present study was performed to investigate the practical efficacy and safety of ultrasound (US) plus microbubble (MB)-mediated gene transfer to cornea. METHODS Cultured rabbit corneal epithelial (RC-1) cells were incubated in(More)
PURPOSE To investigate the functional properties and intracellular signaling of hyalocytes under platelet-derived growth factor (PDGF)-rich conditions. METHODS The hyalocytes were isolated from bovine eyes and identified by immunocytochemistry and electron microscope. The expression of PDGF receptor alpha/beta and its phosphorylation in response to(More)
PURPOSE The reflectivity of optical coherence tomographic (OCT) images has been used to evaluate retinal diseases. The purpose of our study was to determine whether a significant correlation exists between the reflectivity of the subretinal fluid (SRF) and the concentration of intravitreal cytokines in eyes with diabetic macular edema (DME). METHODS A(More)
PURPOSE To determine the symmetry of the retinal thicknesses (RT) between the 32 pairs of superior and inferior sectors by posterior pole asymmetrical analysis (PPAA) of the spectral-domain optical coherence tomographic (SD-OCT) images in healthy eyes. In addition, to determine their association with the position of the peak retinal nerve fiber layer (RNFL)(More)
PURPOSE We compared the subfoveal choroidal thickness (SFCT) measured on the images obtained by two spectral-domain optical coherence tomographic (SD-OCT) instruments and one swept-source OCT (SS-OCT) instrument. METHODS A cross-sectional, prospective noninterventional study was done in which SFCT was measured in the images obtained by two SD-OCT(More)